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Wireless Mesh Networks (WMNs), a.k.a. community wireless networks, have emerged to be a new cost-effective and performance-adaptive network paradigm for the next-generation wireless Internet. Targeting primarily for solving the well-known last mile problem for broadband access, WMNs aim to offer high-speed coverage at a significantly lower deployment and maintenance cost. Most of the nodes are stationary in WMNs. Only a fraction of nodes have direct access, and will serve as gateways, to the Internet. In addition, several nodes serve as relays forwarding traffic from other nodes (as well as their own traffic) and maintain network-wide Internet connectivity, while the remaining nodes send frames along dynamically selected ad-hoc paths to the gateway nodes with Internet access.
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